Spathiphyllum wallisii needs a few things to thrive. It's best if you can find a planting mix with good drainage. You can try mixing two parts peat moss or coco coir and one part perlite or vermiculite. This can help improve the base and aeration, which will help your plant stay nice and healthy. And if you want to give it some extra love, you can add one part orchid bark or compost. Just remember, whatever you add, make sure it's the right balance for your plant's needs.